Finding the Fourth Proportional to 1,111.78, 1,534.72 and 752.95

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111.78 : 1,534.72 = 752.95 : x
2. Step 2: Convert to fraction form
   1,111.78/1,534.72 = 752.95/x
3. Step 3: Cross multiply
   1,111.78x = 1,534.72 × 752.95
4. Step 4: Simplify right side
   1,111.78x = 1,155,563.66
5. Step 5: Solve for x
   x = 1,155,563.66/1,111.78
6. Step 6: Final answer
   x = 1,039.38